Research Articles >
College of Science >
Please use this identifier to cite or link to this item:
|Title: ||Effect of crop rotation and nitrogen fertilization on yield and nitrogen efficiency in maize in the northern Guinea savanna of Nigeria|
|Authors: ||Yusuf, A. A.|
Iwuafor, E. N. O.
Abaidoo, R. C.
Olufajo, O. O.
N use efficiency
N fertilizer recovery efficiency
|Issue Date: ||Oct-2009|
|Publisher: ||African Journal of Agricultural Research|
|Citation: ||African Journal of Agricultural Research Vol. 4 (10), pp. 913-921, October, 2009|
|Abstract: ||Two crop rotation cycles were evaluated to determine the effect of cropping systems and N
fertilization on the yield and efficiency of N in maize. Maize was grown on plots which had previously
supported monocrops of two genotypes each of soybean (TGx 1448-2E and SAMSOY-2) and cowpea
(IT 96D-724 and SAMPEA-7), natural fallow and maize. In a split-plot experimental design, three N
fertilizer rates (30, 60 and 90 kg ha-1) and an unfertilized control were compared. On average, maize
following legumes had higher grain yield of 1.2 and 1.3-fold compared with maize after fallow or maize
after maize respectively. Similarly, legume rotation resulted in significant increase in total N uptake
compared to continuous maize. In both years, N agronomic efficiency (AEN) and N fertilizer recovery
efficiency (REN) of maize following grain legumes were on average 14 and 34% greater than of maize
following maize and 12 and 20% greater than of maize following fallow respectively. On the other
hand, all N efficiency indices except N physiological efficiency significantly decreased with increasing
N levels. These indicate greater N use efficiency for the legume-rotation and poor efficiency for maize
monoculture as well as the inefficiency of the current method of N fertilizer application|
|Description: ||An article published by African Journal of Agricultural Research Vol. 4 (10), pp. 913-921, October, 2009. Available online at http://www.academicjournals.org/AJAR|
|Appears in Collections:||College of Science|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.